?formula Simon Blomberg, PhD Depression & Anxiety Consumer Research Unit Centre for Mental Health Research Australian National University http://www.anu.edu.au/cmhr/ [EMAIL PROTECTED] +61 (2) 6125 3379
> -----Original Message----- > From: g [mailto:[EMAIL PROTECTED] > Sent: Friday, 13 June 2003 10:12 AM > To: [EMAIL PROTECTED] > Subject: [R] formula (joint, conditional independence, etc.) - > mosaicplots > > > Hi, > > Can someone set me straight as to how to write formulas in R > to indicate: > complete independence [A][B][C] > joint independence [AB][C] > conditional independence [AC][BC] > nway interaction [AB][AC][BC] > ? > > For example, if I have 4 factors: > hair colour, eye colour, age, sex > > does > > mosaicplot( frequency ~ hair + eye + age + sex) > > mean that the model fitted is of complete independence of all factors > [hair][eye][age][sex]? > > So does > > mosaicplot(frequency ~ hair + eye) > mean that the model is of conditional independence > [hairAgeSex][eyeAgeSex]? > > > How does the operator * as in > > mosaicplot( frequency ~ hair * eye) > or > > mosaicplot( frequency ~ hair * eye + age) > equate to in the type of independence model used? > > > Thanks in advance for any elucidation! > > Gina > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
